dotNetRDF API Documentation
VDS.RDF
AsyncError Class
BaseBlankNode Class
BaseDemandGraphCollection Class
BaseEndpoint Class
BaseGraph Class
BaseGraphCollection Class
BaseGraphLiteralNode Class
BaseLiteralNode Class
BaseNode Class
BaseTripleCollection Class
BaseTripleComparer Class
BaseTripleStore Class
BaseUriNode Class
BaseVariableNode Class
BasicTripleContext Class
BlankNode Class
BlankNodeMapper Class
BlankNodeOutputMapper Class
CancellableGraphEventArgs Class
CancellableGraphEventHandler Delegate
ComparisonHelper Class
DiskDemandGraphCollection Class
DiskDemandTripleStore Class
EqualityHelper Class
Extensions Class
FastNodeComparer Class
FastVirtualNodeComparer Class
FileGraphPersistenceWrapper Class
FullTripleComparer Class
Graph Class
GraphCallback Delegate
GraphCollection Class
GraphDiff Class
GraphDiffReport Class
GraphDiffReportExtensions Class
GraphEventArgs Class
GraphEventHandler Delegate
GraphExtensions Class
GraphFactory Class
GraphLiteralNode Class
GraphMatcher Class
GraphPersistenceAction Class
GraphPersistenceActionType Enumeration
GraphPersistenceWrapper Class
GraphSizeComparer Class
IBlankNode Interface
IGraph Interface
IGraphLiteralNode Interface
IInferencingTripleStore Interface
IInMemoryQueryableStore Interface
ILiteralNode Interface
INamespaceMapper Interface
INativelyQueryableStore Interface
IndexHelper Class
INestedNamespaceMapper Interface
INode Interface
INodeFactory Interface
IObjectParser(T) Interface
IRdfHandler Interface
IRdfReader Interface
IRdfWriter Interface
ISparqlResultsHandler Interface
ISparqlResultsReader Interface
ISparqlResultsWriter Interface
IStoreReader Interface
IStoreWriter Interface
ITransactionalGraph Interface
ITransactionalStore Interface
ITripleContext Interface
ITripleStore Interface
IUpdateableTripleStore Interface
IUriNode Interface
IVariableNode Interface
IWrappingRdfHandler Interface
LiteralEqualityMode Enumeration
LiteralExtensions Class
LiteralNode Class
MimeTypeDefinition Class
MimeTypeSelector Class
MimeTypesHelper Class
NamespaceCallback Delegate
NamespaceChanged Delegate
NamespaceMapper Class
NestedNamespaceMapper Class
NodeFactory Class
NodeListCallback Delegate
NodeType Enumeration
NonIndexedGraph Class
NonIndexedThreadSafeGraph Class
ObjectComparer Class
ObjectSubjectComparer Class
Options Class
PersistentTripleStore Class
PredicateComparer Class
PredicateObjectComparer Class
QNameMapping Class
QNameOutputMapper Class
QueryableGraph Class
QueryCallback Delegate
RdfException Class
RdfHandlerCallback Delegate
RdfReaderWarning Delegate
RdfWriterWarning Delegate
SparqlResultsCallback Delegate
SparqlResultsHandlerCallback Delegate
SparqlWarning Delegate
StoreGraphPersistenceWrapper Class
StoreReaderWarning Delegate
StoreWriterWarning Delegate
StringExtensions Class
SubjectComparer Class
SubjectObjectComparer Class
SubjectPredicateComparer Class
SubTreeIndexedTripleCollection Class
ThreadSafeGraph Class
ThreadSafeGraphCollection Class
ThreadSafeQNameOutputMapper Class
ThreadSafeTripleCollection Class
ThreadSafeTripleStore Class
Tools Class
TreeIndexedTripleCollection Class
Triple Class
TripleCollection Class
TripleEqualityComparer Class
TripleEventArgs Class
TripleEventHandler Delegate
TripleIndexType Enumeration
TriplePersistenceAction Class
TripleStore Class
TripleStoreCallback Delegate
TripleStoreEventArgs Class
TripleStoreEventHandler Delegate
TripleStoreExtensions Class
TripleStorePersistenceAction Class
UnionGraph Class
UnionTripleCollection Class
UnregisteredRdfWriterTypeException Class
UpdateCallback Delegate
UriComparer Class
UriFactory Class
UriNode Class
VariableContext Class
VariableContextType Enumeration
VariableNode Class
WebDemandGraphCollection Class
WebDemandTripleStore Class
WrapperGraph Class
WrapperGraphCollection Class
WrapperNode Class
WrapperTripleCollection Class
WrapperTripleStore Class
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TripleIndexType Enumeration

Possible Triple Index types.

Namespace:  VDS.RDF
Assembly:  dotNetRDF (in dotNetRDF.dll) Version:
Syntax
Copy
public enum TripleIndexType
Members
  Member nameValueDescription
NoVariables-2 No Index should be used as the Pattern does not use Variables
None-1 No Index should be used as the Pattern is three Variables
Subject2 Subject Index should be used
Predicate1 Predicate Index should be used
Object0 Object Index should be used
SubjectPredicate5 Subject-Predicate Index should be used
PredicateObject3 Predicate-Object Index should be used
SubjectObject4 Subject-Object Index should be used
Remarks

Index types are given Integer values with the lowest being the least useful index and the highest being most useful index. Non-Index based Patterns are given arbitrary high values since these will typically never be used as these items are usually inserted into a Graph Pattern after the ordering step.

When used to sort Patterns as part of query optimisation the patterns are partially ordered on the usefullness of their index since more useful indexes are considered more likely to return fewer results which will help restrict the query space earlier in the execution process.

See Also